CA1112555A - Cutting of contour bevels - Google Patents
Cutting of contour bevelsInfo
- Publication number
- CA1112555A CA1112555A CA333,910A CA333910A CA1112555A CA 1112555 A CA1112555 A CA 1112555A CA 333910 A CA333910 A CA 333910A CA 1112555 A CA1112555 A CA 1112555A
- Authority
- CA
- Canada
- Prior art keywords
- torch
- cutting
- sector
- workpiece
- positions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
- B23K37/0235—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track the guide member forming part of a portal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/001—Cutting, scarfing, or desurfacing by applying flames for profiling plate edges or for cutting grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2210/00—Machine tools incorporating a specific component
- B23Q2210/006—Curved guiding rails
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
CUTTING OF CONTOUR BEVELS
Abstract The torch of a machine for progressive contour bevel cutting of flat plates is mounted for controlled positioning and movement on an arcuate sector, the radius of which has a center lying in the horizontal plane of the plate. The torch is mounted for movement between adjustable stops which delineate two torch angles for cutting. A device is provided for sub-stantially instantaneously moving the torch along the sector from adjacent one stop to the other stop. In the embodiment disclosed herein, the said device comprises a fluid-operated piston connected to the torch.
Abstract The torch of a machine for progressive contour bevel cutting of flat plates is mounted for controlled positioning and movement on an arcuate sector, the radius of which has a center lying in the horizontal plane of the plate. The torch is mounted for movement between adjustable stops which delineate two torch angles for cutting. A device is provided for sub-stantially instantaneously moving the torch along the sector from adjacent one stop to the other stop. In the embodiment disclosed herein, the said device comprises a fluid-operated piston connected to the torch.
Description
.... .. .
U.S. Prior Art Of Interest McKiernan 2,416,399 February 25, 1947 Usami et al 3,492,552 January 27, 1970 Omura 3,765,661 October 16, 1973 Muller et al 3,900,346 August 19, 1975 Cecil 4,008,384 February 15, 1977 Background And Summary Of The Invention This invention relates to cutting of contour bevels, and more particularly to the cutting of such bevels on workpieces such as flat metal plates.
Heretofore, in the manufacture of gate valves and the like, the plates from which the valves have been cut have often been fabricated from stainless steel. In contour cutting the valve with the older conventional torches and/or mechanical cutters, a substantial length of cutting time such as 1-2 hours was required. Changes in the contour during cutting could easily be handled because the torch head or other cutter moved slowly relative to the work. In recent times the development of plasma torches, which are electrical in nature, has substantially shortened the cutting time to as ~ittle as 1-2 minutes for a similar item, with a major speed increase f~-~ in torch movement.
With very fast cutting speeds, control of the torch position relative to the 1at workpiece during contour bevel cutting has become extremely lmportant. It has already been proposed to mount the plasma torch for movement on an arcuate sector having its center of radius lying in the horizontal plane of the flat workpiece. The torch axis would therefor always pass through the said center of radius~ no matter what adjusted angle the torch assumed on the sector during contour ; bevel cutting. In other words, the torch was always precisely aimed at the surface of the flat workpiece.
., In the formation of certain shapes from flat plates, s~ch as the above-mentioned gate valves, it is necessary to provide a vertical edge which merges by a very sharp shoulder into a contoured bevel edge and back again. Heretofore, the 5 control of movement of a plasma torch mounted on a sector during cutting has been so slow that sharp changes in the bevel contour, such as shoulders, have not been possible with this system. Thus, the advantages of the sector concept with plasma torch cutting could not be utilized in the manufacture of these shapes.
The present invention is directed to a concept whereby a sector mounted torch ~ay be controlled in such a manner that C substantially instantaneous repositloning of the torch and its resultant angle relative to the workpiece are possible.
ore specifically, the torch of 2 rmachine ,or pro-gressive contour bevel cutting of flat plates is mounted for controlled positioning and movement on an arcuate sector, the radius of which has a center lying in the horizontal plane of the plate. The torch is mounted for movement between ad~usta~le stops which delineate two torch angles for cutting.
A device is provided for substantially instantaneously moving ; ( ~ the torch along the sector from adjacent one stop to the other stop. In the embodiment disclosed herein, the said device comprises a fluid-operated piston connected to the torch.
Brief Description Of The Drawings ., : ..
The drawings furnished-herewith illustrate the best mode presently contemplated by the inventors for carrying out the invention.
In the drawings:
Fig. 1 is a front elevation of a metal cutting machine --2.
.. . . .
embodying the concept of the invention, with parts broken away and in section;
Fig. 2 is an enlarged perspective view of the lower torch mounting assembly with parts broken away;
Fig. 3 is an enlarged front elevation of the entire assembly taken on line 3--3 of Fig. 4 with parts in section;
Fig. 4 is a side view of the assembly taken on line 4--4 of Fig. 1 with parts in section;
Fig. 5 is an enlarged fragmentary showing of the torch assembly showing torch movement;
Fig. 6 is a schematic plan view of a worXpiece showing formation of a gate valve;
Fig. 7 is a section tak~n on line 7--7 of Fig. 6;
Fig. 8 is a section taken on line 8- 8 of Fig. 6;
; 15 Fig. 9 is a fragmentary perspective view of the part showing the contour bevel and vertical cuts, taken on line 9--9 of Fig. 6; and ~ Fig. 10 is a fragmentary view showing the use of a - height sensing probe.
Description Of The Preferred Embodiment As best shown in Fig. 1 of the drawings, a metal - cutting machine includes a pair of end trucks 1 having rollers 2 thereon and which are adapted to be driven along floor rails 3 by any suitable well-known servo drive or the like, including one or more motors 4. For this type of machine, the movement along rails 3 during cutting i5 usually referred to as being in a longitudinal direction.
An elongated box-like bridge 5 is secured to and extends transversely between trucks 1 in a direction normal to rails 3. Bridge 5 is adapted to support at least one torch ~`~
~.1;2555 .. ... . ... . . . ...... .. .. . . . .
carriage 6 thereon, with the latter being translatable along the bridge in a transverse direction by drive means such as a motor 7 and rack and pinion 8. Carriage 6 carries a torch assembly 9 which includes a torch body 10 and nozzle 11 forming a torch axis 12.
Torch assembly 9 is serviced and controlled through a plurality of cables 13 in a well-known manner. As shown in Fig. 1, cables 13 extend rearwardly to a festoon system including an overhead track 14.
It is contemplated that the torch is of the plasma type which promotes fast cutting although other types of torches may also be utilized. Purthermore, while only one carriage 6 and torch asse~bly 9 are shown, a'plurality of such elements will probably be mounted on bridge 5 so that simultaneous multiple cuts may be made.
Torch assembly 9 is adapted to contour cut a flat horizontal workpiece which is shown as a metal plate 15 fixedly supported on a table 16 or the like.
Referring to Figs. 6-9, and as an example, it is . 20 desirea to cut a part 17 ~rom plate i5. Part 17 has a vertical straight end edge 18, and a pair of straight side edges 19 ( which are perpendicular to edge 18. Edges 19 are also vertical through a portion of their extent, but merge through sharp transverse shoulders 20 into an inwardly beveled portion 21 which forms a contoured end 22 opposite edge 18.
In forming the basic outline of the cut described above, torch assembly 9 is moved in the longitudinal and/or transverse directions by the us~al operation of motors 4 and 7.
The mechanism for controlling the angle of cut as well as forming shoulder 20 will now be described.
Referring primarily to Figs. 3 and 4, torch carriage 6 provides a framework within which is mounted a suitably actuated motor 23 which is connected through gearing 24 to a vertical shaft 25 defining an axis of rotation 26 which is co-axial with axis 12 when torch body lO is vertical.
The lower end of shaft 26 extends below the carriage housing and carries an inverted L-shaped support bracket 27. Bracket 27 includes a vertical portion offset from axes 12 and 26 and which forms a flat support member 28. See also Fig. 2.
For purposes of angular control of torch assembly 9, an arcuate cam-like sector 29 is mounted to the front face of support member 28 as by posts 30 which space sector 29 from member 28. See Fig. 4. Sector 29 is adapted to mount torch - 15 assembly 9, and for this purpose the upper portion of the assembly is mounted to a clamp 31 with the rear portion of the latter mounting a control plate 32. A pair of spaced cam followers 33 extend rearwardly from control plate 32 with follower 33 being generally circular and enveloping sector 29, For purposes of stabilizing torch assembly 9 so that, while it is effectively suspended from sector 29, it is held so that , its axis 12 remains in a vertical plane generally parallel to support member 28, a position stabilizer plate 34 is mounted to the rear face of control plate 32. Plate.34 has an upper edge portion which is gripped between a pair of spaced support rollers 35 with the latter being mounted to an arm 36 which is secured to and extends forwardly from support member 28.
It is contemplated that torch body lO be moved from one position to another on sector 29 in a manner so that the torch nozzle 11 is always pointed at the plane of plate 15 at ~ i `--- - - - . . .
all angular torch positions. For this purpose, the arc of sector 29 has a radius 37, the center 38 of which is disposed in the plane of planular workpiece 15, as best shown in Fig. 5.
The means for shifting torch body 10 comprises a fluid pressure cylinder 39 which may be of the pneumatic or hydraulic type and connected via lines 40 to a suitable actuating device which may be part of the machine controls but which, in this instance, is shown as a valve 41 having a suitable actuating ha~dle 42~ Cylinder 39 is attached to the rear face of support member 28 and has a movable ram 43 exte~nding downwardly therefrom. The outer end of ram 43 has a block 44 therecn. One end of a lever 45 is pivotally mounted ( to the block, while the other end is fixedly mo~nted to one end of a rotatable shaft 46 which extends through support member 28. The other end of shaft 46 secures the inner end of a lever fork arm 47 (the outer fork end of which cradles a transverse pin 48) which is secured to and extends rearwardly from support member 28. Actuation of cylinder 39 causes ram 43 to move either up or down, so that fork arm 47 is caused to drive pin 48 and the associated connected torch body 10 arcuately about sector 29.
Stop means are provided on the assembly to adjustably position torch body 10 at one of a plurality of spaced fixed discrete locations on arcuate sector 29. Fo~ this purpose, a projection 49 is fixed to the rear of stabilizing plate 34 and moves arcuately with assembly 9. A pair of arcuately spaced stop members are mounted to support member 28 in the path of movement of projection 49, with the stop members shown as comprising a plate 50 secured to member 28 and an adjustable 3Q stop screw 51 threaded through the plate.
. i..~",~
s~s In the embodiment disclosed hercin, one stop member is disposed so that when projection 49 engages the respective upper screw 51, torch nozzle 11 will be generally vertical as shown in full lines in Fig. 5. The other stop member is 5 disposed so that when projection 49 engages the other or lower screw 51, torch nozzle 11 will be disposed generally at 45 from the vertical as shown in phantom lines in Fig. 5.
Turning now to Figs. 6-9, it is desired to cut a gate valve or other part 17 in plate 15. With projection 49 - 10 in engagement with upper stop screw 51 so that torch nozzle 11 is vertical, the machine bridge and carriage are suitably actuated to cause the torch to cut edge 18 and to then proceed C in the direction of the arrows to cut edge 19. As shown-in Fig. 7, edge 19 will also be vertical. It is next desired to 15 change the edge orientation from vertical to an angular bevel cut which is contoured, but with ~harp shoulder 20 between them.
The concept of the invention provides means to make a substantially instantaneous angle change, which creates the 20 desired shoulder. This is accomplished by actuating ram 43 so that torch head 9 instantly moves from engagement with upper stop screw 51 to the lower stop screw, these screws ~etting the angular limits of torch movement. After the angle change, the torch traverses the contoured area, thus 25 creating the bevel 21 while maintaining proper orientation because of the sector arrangement described previously. A
quick return to a vertical cut is accomplished by shifting torch body 10 back to its original position. The changeover in angles, which is automatically sharp because of the structure 30 of the device, is best shown in Fig. 9.
5~
_ _ Small workpieces 15 are usually completely flat, within tolerances. However, when very large workpieces are - to be cut, there must be positional torch compensation for variations in the workpiece surface. As shown in Fig. 10, 5 a suitable probe 52 may be attached to torch head 11 for sensing any irregularities in the workpiece surface. Probe 52 may be connected in any well-known way to a vertical adjustment mechanism (not shown) for the torch.
The concept of the invention provides a substantially 10 improved arrangement for providing a substantially instant change in position of a cutting torch between a plurality of ; cutting angles. In the present embodiment, one cutting C angle position is vertical and the other is other than vertical for providing for only a partial bevel cut. However, both 15 cutting angle positions could be other than vertical to provide two joined bevel cuts of different angularity.
` While the present disclosure has been directed primarily to flame and plasma type torches, it is contemplated that the invention may embrace other types of sas or fluid 20 material severing devices, including lasers and water jets.
.;' .
U.S. Prior Art Of Interest McKiernan 2,416,399 February 25, 1947 Usami et al 3,492,552 January 27, 1970 Omura 3,765,661 October 16, 1973 Muller et al 3,900,346 August 19, 1975 Cecil 4,008,384 February 15, 1977 Background And Summary Of The Invention This invention relates to cutting of contour bevels, and more particularly to the cutting of such bevels on workpieces such as flat metal plates.
Heretofore, in the manufacture of gate valves and the like, the plates from which the valves have been cut have often been fabricated from stainless steel. In contour cutting the valve with the older conventional torches and/or mechanical cutters, a substantial length of cutting time such as 1-2 hours was required. Changes in the contour during cutting could easily be handled because the torch head or other cutter moved slowly relative to the work. In recent times the development of plasma torches, which are electrical in nature, has substantially shortened the cutting time to as ~ittle as 1-2 minutes for a similar item, with a major speed increase f~-~ in torch movement.
With very fast cutting speeds, control of the torch position relative to the 1at workpiece during contour bevel cutting has become extremely lmportant. It has already been proposed to mount the plasma torch for movement on an arcuate sector having its center of radius lying in the horizontal plane of the flat workpiece. The torch axis would therefor always pass through the said center of radius~ no matter what adjusted angle the torch assumed on the sector during contour ; bevel cutting. In other words, the torch was always precisely aimed at the surface of the flat workpiece.
., In the formation of certain shapes from flat plates, s~ch as the above-mentioned gate valves, it is necessary to provide a vertical edge which merges by a very sharp shoulder into a contoured bevel edge and back again. Heretofore, the 5 control of movement of a plasma torch mounted on a sector during cutting has been so slow that sharp changes in the bevel contour, such as shoulders, have not been possible with this system. Thus, the advantages of the sector concept with plasma torch cutting could not be utilized in the manufacture of these shapes.
The present invention is directed to a concept whereby a sector mounted torch ~ay be controlled in such a manner that C substantially instantaneous repositloning of the torch and its resultant angle relative to the workpiece are possible.
ore specifically, the torch of 2 rmachine ,or pro-gressive contour bevel cutting of flat plates is mounted for controlled positioning and movement on an arcuate sector, the radius of which has a center lying in the horizontal plane of the plate. The torch is mounted for movement between ad~usta~le stops which delineate two torch angles for cutting.
A device is provided for substantially instantaneously moving ; ( ~ the torch along the sector from adjacent one stop to the other stop. In the embodiment disclosed herein, the said device comprises a fluid-operated piston connected to the torch.
Brief Description Of The Drawings ., : ..
The drawings furnished-herewith illustrate the best mode presently contemplated by the inventors for carrying out the invention.
In the drawings:
Fig. 1 is a front elevation of a metal cutting machine --2.
.. . . .
embodying the concept of the invention, with parts broken away and in section;
Fig. 2 is an enlarged perspective view of the lower torch mounting assembly with parts broken away;
Fig. 3 is an enlarged front elevation of the entire assembly taken on line 3--3 of Fig. 4 with parts in section;
Fig. 4 is a side view of the assembly taken on line 4--4 of Fig. 1 with parts in section;
Fig. 5 is an enlarged fragmentary showing of the torch assembly showing torch movement;
Fig. 6 is a schematic plan view of a worXpiece showing formation of a gate valve;
Fig. 7 is a section tak~n on line 7--7 of Fig. 6;
Fig. 8 is a section taken on line 8- 8 of Fig. 6;
; 15 Fig. 9 is a fragmentary perspective view of the part showing the contour bevel and vertical cuts, taken on line 9--9 of Fig. 6; and ~ Fig. 10 is a fragmentary view showing the use of a - height sensing probe.
Description Of The Preferred Embodiment As best shown in Fig. 1 of the drawings, a metal - cutting machine includes a pair of end trucks 1 having rollers 2 thereon and which are adapted to be driven along floor rails 3 by any suitable well-known servo drive or the like, including one or more motors 4. For this type of machine, the movement along rails 3 during cutting i5 usually referred to as being in a longitudinal direction.
An elongated box-like bridge 5 is secured to and extends transversely between trucks 1 in a direction normal to rails 3. Bridge 5 is adapted to support at least one torch ~`~
~.1;2555 .. ... . ... . . . ...... .. .. . . . .
carriage 6 thereon, with the latter being translatable along the bridge in a transverse direction by drive means such as a motor 7 and rack and pinion 8. Carriage 6 carries a torch assembly 9 which includes a torch body 10 and nozzle 11 forming a torch axis 12.
Torch assembly 9 is serviced and controlled through a plurality of cables 13 in a well-known manner. As shown in Fig. 1, cables 13 extend rearwardly to a festoon system including an overhead track 14.
It is contemplated that the torch is of the plasma type which promotes fast cutting although other types of torches may also be utilized. Purthermore, while only one carriage 6 and torch asse~bly 9 are shown, a'plurality of such elements will probably be mounted on bridge 5 so that simultaneous multiple cuts may be made.
Torch assembly 9 is adapted to contour cut a flat horizontal workpiece which is shown as a metal plate 15 fixedly supported on a table 16 or the like.
Referring to Figs. 6-9, and as an example, it is . 20 desirea to cut a part 17 ~rom plate i5. Part 17 has a vertical straight end edge 18, and a pair of straight side edges 19 ( which are perpendicular to edge 18. Edges 19 are also vertical through a portion of their extent, but merge through sharp transverse shoulders 20 into an inwardly beveled portion 21 which forms a contoured end 22 opposite edge 18.
In forming the basic outline of the cut described above, torch assembly 9 is moved in the longitudinal and/or transverse directions by the us~al operation of motors 4 and 7.
The mechanism for controlling the angle of cut as well as forming shoulder 20 will now be described.
Referring primarily to Figs. 3 and 4, torch carriage 6 provides a framework within which is mounted a suitably actuated motor 23 which is connected through gearing 24 to a vertical shaft 25 defining an axis of rotation 26 which is co-axial with axis 12 when torch body lO is vertical.
The lower end of shaft 26 extends below the carriage housing and carries an inverted L-shaped support bracket 27. Bracket 27 includes a vertical portion offset from axes 12 and 26 and which forms a flat support member 28. See also Fig. 2.
For purposes of angular control of torch assembly 9, an arcuate cam-like sector 29 is mounted to the front face of support member 28 as by posts 30 which space sector 29 from member 28. See Fig. 4. Sector 29 is adapted to mount torch - 15 assembly 9, and for this purpose the upper portion of the assembly is mounted to a clamp 31 with the rear portion of the latter mounting a control plate 32. A pair of spaced cam followers 33 extend rearwardly from control plate 32 with follower 33 being generally circular and enveloping sector 29, For purposes of stabilizing torch assembly 9 so that, while it is effectively suspended from sector 29, it is held so that , its axis 12 remains in a vertical plane generally parallel to support member 28, a position stabilizer plate 34 is mounted to the rear face of control plate 32. Plate.34 has an upper edge portion which is gripped between a pair of spaced support rollers 35 with the latter being mounted to an arm 36 which is secured to and extends forwardly from support member 28.
It is contemplated that torch body lO be moved from one position to another on sector 29 in a manner so that the torch nozzle 11 is always pointed at the plane of plate 15 at ~ i `--- - - - . . .
all angular torch positions. For this purpose, the arc of sector 29 has a radius 37, the center 38 of which is disposed in the plane of planular workpiece 15, as best shown in Fig. 5.
The means for shifting torch body 10 comprises a fluid pressure cylinder 39 which may be of the pneumatic or hydraulic type and connected via lines 40 to a suitable actuating device which may be part of the machine controls but which, in this instance, is shown as a valve 41 having a suitable actuating ha~dle 42~ Cylinder 39 is attached to the rear face of support member 28 and has a movable ram 43 exte~nding downwardly therefrom. The outer end of ram 43 has a block 44 therecn. One end of a lever 45 is pivotally mounted ( to the block, while the other end is fixedly mo~nted to one end of a rotatable shaft 46 which extends through support member 28. The other end of shaft 46 secures the inner end of a lever fork arm 47 (the outer fork end of which cradles a transverse pin 48) which is secured to and extends rearwardly from support member 28. Actuation of cylinder 39 causes ram 43 to move either up or down, so that fork arm 47 is caused to drive pin 48 and the associated connected torch body 10 arcuately about sector 29.
Stop means are provided on the assembly to adjustably position torch body 10 at one of a plurality of spaced fixed discrete locations on arcuate sector 29. Fo~ this purpose, a projection 49 is fixed to the rear of stabilizing plate 34 and moves arcuately with assembly 9. A pair of arcuately spaced stop members are mounted to support member 28 in the path of movement of projection 49, with the stop members shown as comprising a plate 50 secured to member 28 and an adjustable 3Q stop screw 51 threaded through the plate.
. i..~",~
s~s In the embodiment disclosed hercin, one stop member is disposed so that when projection 49 engages the respective upper screw 51, torch nozzle 11 will be generally vertical as shown in full lines in Fig. 5. The other stop member is 5 disposed so that when projection 49 engages the other or lower screw 51, torch nozzle 11 will be disposed generally at 45 from the vertical as shown in phantom lines in Fig. 5.
Turning now to Figs. 6-9, it is desired to cut a gate valve or other part 17 in plate 15. With projection 49 - 10 in engagement with upper stop screw 51 so that torch nozzle 11 is vertical, the machine bridge and carriage are suitably actuated to cause the torch to cut edge 18 and to then proceed C in the direction of the arrows to cut edge 19. As shown-in Fig. 7, edge 19 will also be vertical. It is next desired to 15 change the edge orientation from vertical to an angular bevel cut which is contoured, but with ~harp shoulder 20 between them.
The concept of the invention provides means to make a substantially instantaneous angle change, which creates the 20 desired shoulder. This is accomplished by actuating ram 43 so that torch head 9 instantly moves from engagement with upper stop screw 51 to the lower stop screw, these screws ~etting the angular limits of torch movement. After the angle change, the torch traverses the contoured area, thus 25 creating the bevel 21 while maintaining proper orientation because of the sector arrangement described previously. A
quick return to a vertical cut is accomplished by shifting torch body 10 back to its original position. The changeover in angles, which is automatically sharp because of the structure 30 of the device, is best shown in Fig. 9.
5~
_ _ Small workpieces 15 are usually completely flat, within tolerances. However, when very large workpieces are - to be cut, there must be positional torch compensation for variations in the workpiece surface. As shown in Fig. 10, 5 a suitable probe 52 may be attached to torch head 11 for sensing any irregularities in the workpiece surface. Probe 52 may be connected in any well-known way to a vertical adjustment mechanism (not shown) for the torch.
The concept of the invention provides a substantially 10 improved arrangement for providing a substantially instant change in position of a cutting torch between a plurality of ; cutting angles. In the present embodiment, one cutting C angle position is vertical and the other is other than vertical for providing for only a partial bevel cut. However, both 15 cutting angle positions could be other than vertical to provide two joined bevel cuts of different angularity.
` While the present disclosure has been directed primarily to flame and plasma type torches, it is contemplated that the invention may embrace other types of sas or fluid 20 material severing devices, including lasers and water jets.
.;' .
Claims (11)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a device for progressively cutting a flat workpiece, the combination comprising:
(a) a frame, (b) a cutting torch mounted for arcuate movement relative to said frame, (c) means defining a plurality of spaced fixed discrete arcuate positions of said torch with said positions being translatable into the respective angles of cut on the workpiece, (d) and means to substantially instantaneously move said torch arcuately between said positions to provide a resultant instant change of cutting angle as said torch cuts the workpiece.
(a) a frame, (b) a cutting torch mounted for arcuate movement relative to said frame, (c) means defining a plurality of spaced fixed discrete arcuate positions of said torch with said positions being translatable into the respective angles of cut on the workpiece, (d) and means to substantially instantaneously move said torch arcuately between said positions to provide a resultant instant change of cutting angle as said torch cuts the workpiece.
2. The device of claim 1 wherein said position defining means comprises a plurality of arcuately spaced stop members disposed in the path of arcuate movement of said torch and engageable thereby.
3. The device of claim 2 wherein said stop members are adjustable to selectively vary the annular engaged stop positions of said torch and the resultant angles of cut.
4. The device of claim 1 wherein said means to instantaneously move said torch comprises:
(a) a fluid cylinder having a shiftable ram connected to said torch, (b) and means to shift said ram substantially instantaneously.
5. The device of claim 4:
(a) a fluid cylinder having a shiftable ram connected to said torch, (b) and means to shift said ram substantially instantaneously.
5. The device of claim 4:
Claim 5 Continued (a) which includes an arcuate sector mounted on said frame, (b) said sector having a radius, the center of which is disposed in the plane of the workpiece, (c) and means suspending said cutting torch from said sector.
6. In a device for progressively cutting a flat workpiece, the combination comprising:
(a) a frame, (b) an arcuate sector mounted on said frame, (c) a cutting torch connected to said sector and movable arcuately relative to said frame, (d) a plurality of arcuately spaced stop members disposed in the path of arcuate movement of said torch and engageable thereby, said stop members defining a plurality of spaced fixed discrete arcuate positions of said torch with said positions being translatable into the respective angles of cut on the workpiece, (e) and fluid pressure actuated means to substantially instantaneously move said torch arcuately between said positions to provide a resultant instant change of cutting angle as said torch cuts the workpiece.
(a) a frame, (b) an arcuate sector mounted on said frame, (c) a cutting torch connected to said sector and movable arcuately relative to said frame, (d) a plurality of arcuately spaced stop members disposed in the path of arcuate movement of said torch and engageable thereby, said stop members defining a plurality of spaced fixed discrete arcuate positions of said torch with said positions being translatable into the respective angles of cut on the workpiece, (e) and fluid pressure actuated means to substantially instantaneously move said torch arcuately between said positions to provide a resultant instant change of cutting angle as said torch cuts the workpiece.
7. The device of claim 6 which includes means suspending said torch from said sector.
8. The device of claim 7 wherein said torch suspending means comprises;
(a) a control plate mounted on said torch, (b) and a follower mounted on said control plate and disposed in engagement with said sector.
(a) a control plate mounted on said torch, (b) and a follower mounted on said control plate and disposed in engagement with said sector.
9. The device of claim 8 which includes:
(a) a stabilizing plate mounted to said control plate, (b) and roller means connected to said frame and engaging said stabilizing plate to hold the axis of said torch in a vertical plane.
(a) a stabilizing plate mounted to said control plate, (b) and roller means connected to said frame and engaging said stabilizing plate to hold the axis of said torch in a vertical plane.
10. The device of claim 9 which includes a projection disposed on said stabilizing plate and with said projection adapted to selectively engage said stop members.
11. The device of claim 8 or 9 wherein said fluid pressure actuated means comprises:
(a) a fluid cylinder having a shiftable ram, (b) a pin extending from said control plate, (c) and lever means connecting said ram and said pin to move the latter upon actuation of said ram.
(a) a fluid cylinder having a shiftable ram, (b) a pin extending from said control plate, (c) and lever means connecting said ram and said pin to move the latter upon actuation of said ram.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/937,067 US4205828A (en) | 1978-08-28 | 1978-08-28 | Cutting of contour bevels |
| US937,067 | 1978-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1112555A true CA1112555A (en) | 1981-11-17 |
Family
ID=25469445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA333,910A Expired CA1112555A (en) | 1978-08-28 | 1979-08-16 | Cutting of contour bevels |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4205828A (en) |
| JP (1) | JPS5533895A (en) |
| CA (1) | CA1112555A (en) |
| DE (1) | DE2926791A1 (en) |
| FR (1) | FR2434675A1 (en) |
| GB (1) | GB2028703B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2603873B2 (en) * | 1989-01-09 | 1997-04-23 | 三菱電機株式会社 | Laser processing machine and laser processing method |
| US5256212A (en) * | 1992-03-27 | 1993-10-26 | Peddinghaus Corporation | Method and apparatus for flame cutting a workpiece |
| US5286006A (en) * | 1992-06-29 | 1994-02-15 | Koike Sanso Kogyo Kabushiki Kaisha | Bevel cutting device |
| US5265849A (en) * | 1992-08-19 | 1993-11-30 | Koike Sanso Kogyo Kabushiki Kaisha | Plate cutting device |
| DE19835062C1 (en) * | 1998-08-04 | 1999-11-11 | Messer Griesheim Schweistechni | Cutting chamfers on components to be joined by welding |
| JP2001129675A (en) * | 1999-11-05 | 2001-05-15 | Koike Sanso Kogyo Co Ltd | Torch angle setting device |
| US7464630B2 (en) * | 2001-08-27 | 2008-12-16 | Flow International Corporation | Apparatus for generating and manipulating a high-pressure fluid jet |
| US7074112B2 (en) * | 2003-03-21 | 2006-07-11 | Omax Corporation | Apparatus that holds and tilts a tool |
| DE10319251A1 (en) * | 2003-04-28 | 2004-12-02 | Alexander Binzel Schweisstechnik Gmbh & Co. Kg | Welding torch holder |
| FR2869559B1 (en) * | 2004-04-29 | 2007-06-29 | Hubert Clapot | DEVICE FOR CUTTING METAL TUBES |
| DE102008030783B3 (en) * | 2008-06-28 | 2009-08-13 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Process for laser beam angle cutting of workpiece involving ultrasonic gas cutting stream generally useful in laser cutting operations gives higher quality products at increased cutting speeds |
| IT1393091B1 (en) * | 2009-02-18 | 2012-04-11 | Grassi | HEAD FOR CONTINUOUS PRECISION MACHINING ON THREE-DIMENSIONAL BODIES AND MACHINING MACHINE INCLUDING THE HEAD |
| US8097204B2 (en) * | 2009-11-12 | 2012-01-17 | Koike Aronson, Inc. | Bevel head attachment for plasma and oxy fuel cutting machines |
| US8904912B2 (en) | 2012-08-16 | 2014-12-09 | Omax Corporation | Control valves for waterjet systems and related devices, systems, and methods |
| US9770775B2 (en) * | 2013-11-11 | 2017-09-26 | Lincoln Global, Inc. | Orbital welding torch systems and methods with lead/lag angle stop |
| US9731385B2 (en) | 2013-11-12 | 2017-08-15 | Lincoln Global, Inc. | Orbital welder with wire height adjustment assembly |
| DE102016213540A1 (en) * | 2016-07-25 | 2018-01-25 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Method for producing oblique projections or recesses on a cutting edge of a plate-shaped workpiece and associated computer program product |
| US11554461B1 (en) | 2018-02-13 | 2023-01-17 | Omax Corporation | Articulating apparatus of a waterjet system and related technology |
| US12051316B2 (en) | 2019-12-18 | 2024-07-30 | Hypertherm, Inc. | Liquid jet cutting head sensor systems and methods |
| US12064893B2 (en) | 2020-03-24 | 2024-08-20 | Hypertherm, Inc. | High-pressure seal for a liquid jet cutting system |
| WO2021202390A1 (en) | 2020-03-30 | 2021-10-07 | Hypertherm, Inc. | Cylinder for a liquid jet pump with multi-functional interfacing longitudinal ends |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE594998C (en) * | 1934-03-26 | Friedrich Ludwig Mueller Ing | Device for flame cutting workpieces on a miter and along any lines | |
| US1554406A (en) * | 1924-02-27 | 1925-09-22 | Kobe Inc | Cutting torch with oscillating tip |
| DE893610C (en) * | 1943-02-12 | 1953-10-19 | Griesheim Autogen | Fixed flame cutting machine with magnetic roller guide and automatic control of the burner for shaped cuts with beveled edges |
| DE925565C (en) * | 1950-08-29 | 1955-03-24 | Schichau A G F | Automatic post-forming machine tool, in particular a flame cutting machine, working according to a pattern curve with the aid of photoelectric means |
| GB808709A (en) * | 1955-06-13 | 1959-02-11 | Grove Valve & Regulator Co | Improvements in or relating to flame cutting apparatus |
| SE337517B (en) * | 1967-10-24 | 1971-08-09 | Centro Maskin Goteborg Ab | |
| US3765661A (en) * | 1971-09-09 | 1973-10-16 | Mitsui Shipbuilding Eng | Cutting torch device for gas cutting |
| JPS5138470B2 (en) * | 1972-01-21 | 1976-10-21 | Nippon Kokan Kk | |
| US4006890A (en) * | 1974-04-22 | 1976-02-08 | Shimon Abramovich Vainer | Gas-cutting torch arrangement |
| JPS512423A (en) * | 1974-06-25 | 1976-01-10 | Canon Kk | KOKIDOHANIHISHATAISATSUEISOCHI |
| DE2631995A1 (en) * | 1976-07-16 | 1978-01-19 | Esab Kebe Gmbh | Two burner unit for flame cutting machine - where vertical angle of one burner is adjusted by computer controlled motors |
-
1978
- 1978-08-28 US US05/937,067 patent/US4205828A/en not_active Expired - Lifetime
-
1979
- 1979-07-03 DE DE19792926791 patent/DE2926791A1/en not_active Withdrawn
- 1979-08-03 GB GB7927177A patent/GB2028703B/en not_active Expired
- 1979-08-16 CA CA333,910A patent/CA1112555A/en not_active Expired
- 1979-08-22 FR FR7921178A patent/FR2434675A1/en not_active Withdrawn
- 1979-08-28 JP JP10961679A patent/JPS5533895A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US4205828A (en) | 1980-06-03 |
| DE2926791A1 (en) | 1980-03-13 |
| GB2028703A (en) | 1980-03-12 |
| FR2434675A1 (en) | 1980-03-28 |
| JPS5533895A (en) | 1980-03-10 |
| GB2028703B (en) | 1982-12-01 |
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